how do you masterbate (im a girl)

I've heard it feels great and is so much fun to do like 3 times a day. Everytime I try to use my fingers or a sharpie it doesn't work. I've tried using water in the bath or shower. I don't feel anything. I've tried rubbing my clitoris and everything. I've tried watching porn but nothing helps. I feel the urge to finger myself a lot and nothing becomes of it. Any advice helps